The death of Grand Rabbi Moses Teitelbaum heightened tensions yesterday between warring factions of the Satmar Hasidic sect.

At Teitelbaum’s funeral in upstate Kiryas Joel, a scuffle broke out between members of opposing sides in the bitter succession battle between the holy man’s two sons.

The brawl left two innocent men injured – Lipa Teitelbaum, one of the grand rabbi’s sons, who is not involved in the succession dispute, and Moshe Friedman, the 92-year-old grand rabbi’s former assistant.

“It was chaos for a moment, but state troopers came in and calmed everyone down,” said one witness, who claimed that the fighting erupted after a partisan of Rabbi Aaron Teitelbaum, the eldest son, grabbed the microphone at the funeral and tried to give it to one of Aaron’s sons.

The community has been split since 1999, when the grand rabbi selected Zalman to lead the Brooklyn congregation in Williamsburg, while Aaron continued to be in charge of the Orange County community in Kiryas Joel.

Both sides claimed victory as Zalman sat shiva, the seven-day Jewish period of mourning, last night at his father’s house in Brooklyn, while Aaron did the same in Kiryas Joel.

As The Post reported yesterday, Zalman was named his father’s successor. As proof, supporters produced the grand rabbi’s will, which reads, “[Zalman] shall occupy my position and succeed me without any shortfall, for effective immediately I have granted him the position.”

Copies of the document, written in Yiddish about five years ago, were handed out last night to hundreds who had gathered in front of Teitelbaum’s home on Ross Street and Bedford Avenue.

The state Appellate Division briefly reversed an earlier ruling putting an Aaron Teitelbaum supporter in charge of the Satmar board of directors and its $500 million in assets, including real-estate holdings, yeshivas, cemeteries, summer camps, social services and a matzo factory, sources said.

That means Zalman now has control of the board, although Aaron’s side plans to continue an appeal.

Aaron’s side has long said the grand rabbi’s failing health and Alzheimer’s at the time of the will’s writing cast the document into doubt.